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  • Title: Diffuse craniospinal metastases of intraventricular rhabdoid papillary meningioma with glial fibrillary acidic protein expression: a case report.
    Author: Eom KS, Kim DW, Kim TY.
    Journal: Clin Neurol Neurosurg; 2009 Sep; 111(7):619-23. PubMed ID: 19482417.
    Abstract:
    Rhabdoid papillary meningioma is a recently described clinically aggressive variant of meningiomas with a high recurrence rate. Additionally, only one case of intraventricular rhabdoid meningioma has been reported so far. We present a case of a 50-year-old man who developed an intracranial tumor of the left lateral ventricle at the trigone, for which he underwent total tumor resection followed by gamma knife radiosurgery for recurrence of the tumor. The histological diagnosis was rhabdoid papillary meningioma. Five years after surgery, diffuse craniospinal leptomeningeal metastases developed and subtotal removal of the spinal tumor was performed. The spinal tumor was considered to have metastasized via cerebrospinal fluid (CSF) in view of its histological features that were identical to those of the primary tumor. Immunohistochemistry revealed the unusual cytoplasmic expression of glial fibrillary acidic protein (GFAP) of tumor cells. To our knowledge, this is the first reported case of diffuse craniospinal metastases of intraventricular rhabdoid papillary meningioma with GFAP expression and the second reported case of the rhabdoid subtype amongst intraventricular meningiomas.
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